Calculating machine



Jan. 29, 1957 G, C, ELLERBECK 2,779,542

CALCULATING MACHINE Filed 0G12. 5, 1953 2 SheeitS-Sheet l Jan. 29, 1957 G. c. ELLERBECK 2,779,542

CALCULATING MACHINE:

2 Sheets-Sheet 2 Filed Oct. 5,4 1953 PIG...

nited States Patent O CALCULATING MACHINE Grant C. Ellerbeck, San Leandro, Calif., assignor to Friden Calculating Machine Co., Inc., a corporation of California Application October 5, 1953, Serial No. 384,055' 7 Claims. (Cl. 23S- 138) This invention relates to calculating machines and is especially concerned with an improved mechanism for actuating the counter register.

A primary object of the present invention is to provide an improved actuator for the counter mechanism shown and described in the patent to Carl M. Friden, No. 2,229,889, of January 28, 1941.

An important object of the present invention is to provide a counter actuator in which it is unnecessary to stagger the tens-transfer mechanism connected therewith. In the conventional counter mechanism, such as disclosed in the patent above-mentioned, the tens-carry mechanisms associated with the counter actuator are staggered around an operating shaft so that a transfer wave (i. e., a transfer thro-ugh a plurality of orders as is required when the counter stands with a plurality of consecutive 9s and the lower one is moved from 9 to 0) may occur. It will be understood that the transfer mechanism must be conditioned for the transfer from the lower order to its adjacent higher order prior to conditioning the transfer mechanism from the adjacent order to the next higher order, etc. ln my invention the transfer mechanism can be arranged on substantially the same plane, which results in considerable saving in assembly, as in conventional mechanisms the transfer devices must be accurately staggered around the control shaft in order to accommodate the transfer wave.

Still a further object of the present invention is to provide a more eiicient transfer actuator and tens-transfer mechanism for a counter register.

These and further objects of the present invention will be fully understood from a reference to the following specification and claims, and they, in turn, will be more readily understood by a reference to the drawings, in which:

Fig. l is a left side view of a portion of the control mechanism associated with my invention.

Fig. 2 is a left side View of another control mechanism for the counter actuator.

Fig. 3 is a plan view of the mechanism shown in Fig. 2.

Fig. 4 is a front view of four orders of a counter mechanism of the type generally described in the patent abovementioned.

Fig. 5 is an end view of one of the actuators above the lowest order, showing the transfer mechanism in its fullcycle or neutral posittion.

Fig. 6 is an end view similar to Fig. 5, but showing one of the transfer devices in its operative position.

Fig. 7 is a detailed right end view of a means for rock ing camming bail 84, such as a view taken along the vertical plane indicated by the line 7--7 of Fig. 4.

The machine with which the present invention is preferably associated, is similar in co-nstruction to that described in the above-mentioned patent. Therefore, reference is made to that patent for the general construction of the calculating machine. It can be mentioned that the machine includes a pair of frame plates, a right side frame plate 10 (shown in Figs. 2, 3 and 4) and a left frame 2,779,542 Patented Jan. 29, 1957 plate 11 (shown in Fig. 1). The frame plates are interconnected to form a rigid structure by various crossbars, not here pertinent, and a carriage rail 12 (shown in Figs. l, 2, 5 and 6). This machine also includes a laterally shiftable carriage which supports the accumulator register (neither of which is shown), and the counter register which includes the counter dials 20. The counter dials are mounted on parallel, longitudinally extending shafts 21, the front ends of which are journalled in a front carriage bar 22 (Figs. 5 and 6). It will be understood that the dials 20 carry the numerals from 0 to 9, inclusive. which numerals are viewable through suitable windows in the carriage cover (not: shown herein). It will also be understood that the numeral wheels, or dials, 20 are centralized in proper position and can simultaneously be cleared to 0 by conventional mechanisms (not here pertinent).

A anged sleeve 23 is also rigidly mounted on each of the countershafts 21, forwardly of the dial 20, as shown in Figs. 5 and 6. The rearward ange of the ange sleeve 23 is cut as a l0-tooth gear 24, while the forward liange, or disk, 25 is provided with a single notch 25. The notch 26 in the disk 25 is so located, with respect to the 9 position of the dial 20, that it (the notch) lies adjacent the actuator, next to be described, when the latter is in operating position in addition, and 9 shows through its window. The notches 26 are `shown in the 0 position in Fig. 4, in which position they will be engaged by the counter actuators, next to be described, in a subtraction cycle.

The counter dial 20 aligned with the units order of thc machine is given a single step of rotation, with each machine cycle, in order to provide a. counter of 1, additively or subtractively, with each cycle of machine operation. This cycle step-by-step movement is provided by an actuator which is mounted on a counter actuator shaft 30 mounted in the side frames 10 and 11 for rotational. and for longitudinal movement. The actuator, including the shaft 30, is given a compound motion having two major components: one a translatory reciprocation and the other a rotary oscillation. It can be mentioned that when the counter is operated in an additive direction the shaft is irst rocked (clockwise in Figs. 5 and 6) then shifted to the left, then rocked back to its original angular position and finally shifted to the right to the home position. Conversely, when the value is being entered subtractively, the shaft is first shifted to the left, then rocked into engagement with the counter (clockwise in Figs. 5 and 6), then shifted to the right, and iinally rocked back to the starting position. Thus, the counter mechanism rocks through the same path regardless of whether values are being entered additively or subtractivelythe difference between the two operations being the result of the dilference in timing of the rocking and translatory movements. Mounted on the shaft 30, and adjacent the ends thereof, is a pair of two-armed members 31 (see Figs. 5 and 6) which support a pair of substantially diametrically opposed parallel rods 32 and 33. The rearward rod 32 serves as a spring seat as will hereafter be described, and can be rigidly mounted in the supporting arms 31. The forward rod 33, on the other hand, in my invention, should be rotatably mounted in the members 31.

A plurality of actuator spools di) are rotatably disposed along the shaft 3l), between the rods 32 and 33. These actuator spools 4@ are of identical size and shape, with the exception of the right-hand, or lowest order, actuator 41, and are of a length equal to the ordinal spacing of the shafts 21. It can be noted that all of the spools 40 (except the actuator spool 41 in the right-hand, or lowest order) are operative only for transfer actuation; while the right-hand spool 41 is cyclically operable to effect the count into the aligned counter dial 20. This rightavvalso hand', or lowest order, spool di (as seen in Fig. 4), is only partially complete as compared with the other spools 40,' and carries a finger v42 on its left endl (which linger 42' is also mounted onrthe leftV end: of each of the spools 40),.4 This finger 42 is adapted, upon rotation of the spools 41 or 42% to rock between the teeth of the l()- tooth gear 24. which eyelet serves as a seat for one end of al small springl 44 tensioned between the finger Lif?. and the rear transverse rod 32. tuator shaft El?. and themembers 3i, resiiiently biases theingers 42 into engagement with their respective gears 24.

The right end cf each of the higher order spools ai? is provided with a second finger This 'tast-'mentioned linger 45, .is angularly disposed on the spool dit) forwardly (tothe left in Figs. 5i and 6) of the counting finger 42 and is formel, or bent, so thatY its circumferential extremity will lie in the plane of the counting finger 42 of the next lower order. The last-mentioned linger is adapted to intersect the slot 26 in the disk 25 of the lower order, when a tens-transfer is required. elowever, if the slot or notch 26 is not in a position to be ntersected by the linger 45 when the shaft 3? is rst rocked, then the rotation of the finger is blocked by the solid face of the disk 25 to prevent a transfer from occurring in the associated and all higher orders.

As mentioned before, the shaft 30 is rocked and shifted axially in a` timed sequence in each, cycle of machine operation (the time of rocking in the program depending upon whether the. entry of a value into the counter is additive or subtractive). The rocking of the shaft 3 0 causes the rocking of the members 31 which are rigidly securedV thereto, and consequently the two connecting bars 32 and 33 are likewise invariably rocked, or rotated. Rocking of the bar 32` (by means of the resilient tension of; spring44), resiliently biases all of the sleeves l40 and 41 first clockwise, and then later the forward bar 33 returns them counter-clockwise to their originalV position. The clockwise rocking ofY the higher order sleeves 40 which, if permitted, will cause the fingers 42 to engageV the teethY of the ordinally associated gears 24, is necessarily resilient, so asv to permit the counting linger 42 to be blocked shorty of engagement with the gear in order to prevent. a count whenA that is necessary, It will be understood that normally the rocking ofthe counting linger 42 is blocked by its sensing finger 45 engaging the disk 25 of the adjacent lower order, for they must not operate their relatedgears 24 except when a transfer occurs from the, next lower order.,

It can be mentioned at thispoint thatmeans are conventionally provided to bl'ockroperation of the unitsorder sleeve 41 incertain automatic operations, lor at the will of the operator, by means not here pertinent. For the, purpose of myv invention, therefore, it will be assur'nedV that the units order sleeve 41, will be operative with each cycle of machine operation andwill thereforel be eectiveto entera value of 1. additively" or` subtractively into the' counter dial 20 aligned therewith. If

the notch 26 is in line with the linger 42 of the units order actuator sleeve 41, when the shaft 30V isrst rocked, then the tens-transfer linger 45 of the second, or next higher, order (which i-s also resiliently rocked clockwise b'y the force of its springl44) willenter the slot26 of theirst order, thereby permitting sleeve 40 ofA the second order to rock clockwise with, thel rocking off shaft 30'. Inthatevent, the counting linger 42 of the secondorder sleeve-40 c anvmeshwith the teeth of the gear 24 o fjthe secondV higher order dial 20. Then, when the shaft 3i), istranslated longitudinally to enter the count in the lower order dial, the next higher order dial will also be operatedliy its spool 40; Howevenif'th'e notch 2,6,V of ithe dial alighnedmwith,they unitsorder spool-11i isnotin a position to; be interes,ctedby` the resilient rocking'I of the transfer finger 45, then that nger will engage theV sur- An eyelet 43 is formed in the finger 42,k

Thus, the cyclic rocking of thc :zc-

face of the disk 25 which blocks further rocking thereof. Such blocking of rotation of the second order sleeve 4t2 will prevent its counting finger i2 on the left end thereof from engaging the teeth of the second order gear 24- thereby blocking the count in that order. Ey this means a single unit is entered into they counter dial aligned with the units order of the machine, .and atransfer (even to the full length of the counter register) can be provided when` a transfer is called for. g

lt wiil be seen` that the rocking of the shafty 3? resiliently urges the respective counting fingers 42; toward meshing, engagementL with their ordinally related gears 24, through the force of the springs At this juncture the rotary oscillation of the shaft 3i) is interrupted and the shaft translated axially (toward the left in addition and toward the right in subtraction). Such movement occurs While the, counting fingers 42 vremain enmeshed with their ordinally related gearsfi, and. is therefore etfective to rotate the gears and their shafts 21 for one-tenth of av complete revolution, and thus advance the o rdinally related diais 2t? one digit.

At the conclusion of such axial movement of the shaft Si?, the shaft is again rocked (counter-clockwise in Figs. 5 and 6), so that the finger 42 is` rotated oat of engagement with its ordinally related gear Normally the release of tension` on the springs i4 and the slight drag between the sleeves itl or 4i and thc shaft 3h, will cause the sleeves 40 to rock counter-clockwise and therefore di's'engage the counting teeth from their However, if the` dragisinot sufficient, the counter-clockwise rocking of thefr'ont bar 33 will engage projection d6 on the forward edge of the units order spool 4i to positively rock it to its neutral, or disengaged position. Such rocking of spooi 41 positively drives all of 'the higher order spools tothe like positionL for rocking ot any counting ii'nger 42 (counter-clockwise in Figs. 5 and 6) pushes the sensing finger 45 ahead of it, which is repeated throughout the length ofthe higher orders.

As previously indicated,if the shaft 3o is initially rotated to mesh they counting iingers 42 with the ordinally related gears 24 and'` then the shaft translated to the left, the numeral wheelZO is advanced in a positive, or additive, direction. lf, on the other hand, the shaft is first translated to the left and then rocked clockwise, the respeetiveg'ear's willibe, rotated during the rightward movement of the shaft and the numeral wheels Ztl will be rotated in a subtractive, or negative, direction.

l lf agnotch is out of passing position, i. e., when no tenstransfer hasbeen Adetermined, by the units and intermediateorder counter wheelsthe.associated transfer-sensing finger 45 cannot pass the barrier of the disk, and the respective spool 40A therefore cannot rotate with-.shaft Sii. Thus, the counting/.finger 42.A of that spool is held out of countingl position. Dueto the similar interlocldng relations'hip of the higher order spools 4G, all of the higher order spools areheldininactive position `nnless the notch 26 n.the-.unitsorder. disk 25, and all intermediate disks al'felinV atrans'ferring position. By, thisrmeans a transfer is positively effected in all of the higher order dialswhen thetrensfer chainis complete to the` lowest order, but is blocked `whenever it i'snot.

The means for eifecting the necessary operation of the counter shaft 30, i. e its timed rotation and axial translation, will now bedescribed. It can be mentioned that eachtype, ofrnovement rotational or translatory) provided. by separate cams 'tland e9' (Figs. l, 2 and 3, respectively)`, .both of which arev mounted von the drive shaft 13 ofthefmachine. Therefordthe program of operations is always in timed relation, asboth cams are riffidly securedtothedrive shaft 13. The rotational motion of the shaft 3B, willirstbe described. This. motion is derived from aniinternally, groovedcatn 5t) mounted on left end offthef,.drive shaft .13,asshownin Fig` l. A groove Sliithe'rca'niprovides; an eccentric pathoftravel for a follower stud 52y mounted on one arm of a bellcrank 53`.

The bellcrank 53 is pivotally mounted on the left frame plate 11 by any suitable means, such as stud 54. The upper arm of the bellcrank 53 is slotted, as at 55, to embrace a pin 56 carried by an arm 57 rigidly mounted on the shaft 30. The rotation of the drive shaft 13 thus positively rocks the bellcrank 53, and consequently the shaft 30 through a full cycle with each cycle of machine operation. The timing of the rotary oscillation thus provided allows time for a slight dwell to accommodate the first translatory movement of the shaft in a subtractive operation, and then causes engagement of the counter finger 42 with its associated gear 24 by the first phase of such rotary oscillation, which occurs during the first part of the cycle. Then a dwell occurs in such rotary oscillation while the engagement of the linger and gear is maintained to allow for the axial translation to cause movement of the gear for one tooth space. Subsequently the finger is disengaged from the gear by the last phase of the rotary oscillation, the disengagement being effected before the end of the cycle to allow time for the second half or phase of the axial translation to return the actuator finger to its starting position, in additive operation.

The longitudinal, or axial, translation of the shaft 30 is provided by a lmechanism shown particularly in Figs. 2 and 3. The movement is derived from a wobbler cam 6U which is mounted on the drive shaft 13 immediately to the left of the right frame plate 10. The wobbler cam has a pair of grooves 61 and 62 cut therein. rihese cam grooves are of identical contour but are polarly, or angu larly, spaced from each other. In order to change the phase relationship of the axial movement of the shaft 3G to its rotary movement, means is provided for optionally engaging either of the grooves 61 or 62. For this purpose a yoke 63 is provided which is rotatably mounted on a shaft 64 carried by a pair of brackets 65. The lower end of the yoke 63 carries an arm 66, on the outer extremity of which is provided a pin 67 adapted to engage the cam groove 62. The upper end of the yoke is provided with a two-armed lever member 63, on the forward extremity of which is provided a pin 69 which is adapted to engage the cam groove 61. The extremities of the two pins 67 and 69 are spacially arranged so that ooth may be disengaged from their grooves as the counter is shifted from positive to negative registration, and only one or the other of the pins can be engaged in its groove during operation. The rearward end of the upper arm 63 is provided with an upwardly extending pin 70, which is embraced by the flanges of a flanged collar 71 mounted on the shaft 30. The yoke 63 also carries a flanged collar 72 which embraces a pin 73 mounted on an arm 74, which arm in turn is rigidly mounted on a short shaft 7S. Thus, rotation of shaft 75, by any means not here pertinent, is effective to place the yoke 63 in either its elevated position in which the pin 67 on the lower arm 66 engages its groove 62, or the upper pin 69 engages its groove 61 in the wobbler cam. In either position of the yoke 63, it is given an oscillatory movement determined by one of the grooves 61 or 62, depending upon which pin 67 or 69 is engaged with its respective groove. This oscillatory movement is transmitted by the rearward arm of the upper lever 68 to pin 70 which, 1'through its engagement with the flanged collar 71, translates the shaft 30 longitudinally, If the lower pin 67 is in engagement with cam groove 62 then registration in the counter is additive. In this event an initial dwell permits rocking of the shaft 30 by cam 50 to cause meshing of the counter teeth 42 with their respective gears 24, after which the groove 62 rocks the yoke 63 to cause leftward translation of shaft 30; tooth 42 is then disengaged during a short dwell in the cam groove, and at the end of a cycle the cam returns to its full-cycle position and moves the shaft 3i) to the right. If on the other hand, the pin 69 is engaged in the groove 61, then registration in the counter is negative. In that event the cam groove immediately rocks the yoke 63 (counter-clockwise in Fig. 3) to translate the shaft 30 to the left at the start of the cycle of operation; thereafter a `dwell in the cam slot 61 holds the yoke 63 stationary while the cam 50 and bellcrank 53 are operative to rock shaft 30 to cause engagement of the counter teeth 42 with their respective gears; and then cam groove 61 returns the yoke 63 and the shaft 32 to their initial, or full-cycle, axial position, after which a dwell in slot 62 holds the yoke stationary while the cam 50 causes disengagement of the counter teeth 42 from their respective gears. Thus, as the main drive shaft 13 rotates, it imparts to the shaft 30 an axial translation in either selected one of two different phase relationships with the driving shaft. This phase relationship, which is selected in particular instances, controls the sign character of registration on the numeral wheels 20 of the revolutions counter as outlined above.

It is desirable, in the counter mechanism `described in the patent above-referred to, to slightly stagger the counting lingers 42 in order to enable a transfer wave to proceed from right to left in all instances. In usual shop practice, it is conventional to make the parts identical, and then have a mechanic adjust the assembled mechanisrn by bending the fingers 42 inwardly (counter-clockwise in Figs. 5 and 6) to provide a stagger of about .012 inch between orders. Such staggering also adjusts the sensing fingers 4S so that the lower order sensing finger either starts to penetrate the associated slot 26 or is blocked before the next higher sensing finger will engage its disc, so only one finger will engage its disk in any cycle. This staggering requires extreme accuracy in the formation of the parts and considerable time in assembling the mechanism. I am able to avoid both of these diiculties by means of the mechanism of my invention which will now be described.

I provide each of the higher order actuating sleeves 40 with a forwardly extending and pointed cam nose Sti. These noses can be mounted on any part of the sleeve 4i), but for convenience l have formed them as a projection integral with the counting linger 42. These forwardly projecting fingers S0 are provided with a relatively sharp point 8l, an upper concave cam surface 82, and a lower convex cam surface 83, as shown in Figs. 5 and 6. Associated with the cam projections is a transversely extending camming bail S4, which is mounted in the lower ends of a plurality of arms S5 rigidly mounted on the front shaft 33.

As the shaft 30 and its integral arms 31 are rocked, the bail S4 will be lifted to the position indicated by 84A in Fig. 5 by the time the transfer control finger 45 will have started to penetrate the related notch 26. If the transfer finger 45 has come into engagement with the surface of the disk 25, the cam nose Sil will have rocked to the position indicated by 81A in Fig. 5 and further rotation is thereupon blocked. If, on the other hand, the transfer finger 45 has entered a notch 26, the sleeve 40 will rock a slightly greater distance, as to the position indicated by 81B in Fig. 5.

At this point the shaft 33 is given a sharp rotational movement by a means next to be described (counterclockwise in Figs. 5 and 6), which movement rocks the bail S4 into engagement with the cam projections 3%. As indicated in Fig. 5, the bail will engage the upper cam face 82 if rocking of the sleeve has been blocked by the disk 25 and will engage the lower cam face S3 if the transfer finger 45 has entered the notch 26. In the first event the sleeve is given a slight counter-clockwise rotation to back the transfer finger 45 away from the disk and in the latter case the sleeve 4@ is given a slight clockwise rota tion to positively engage the counting linger 42 .in the gear 24. In the iirst instance the transfer actuator sleeves 40 are backed away from engagement with their related dials and in the second instance they are positively forced into a better engagement therewith.

The slight rocking of the shaft 33 can be secured by a variety of means, one of the simplest of which is shown in Figs. 4 and 7. In this embodiment an arm 90 is rigidly savanna secured to the right end of the shaft 33. This arm carriespaf'pin-Sii which penetrates a shaped aperture 92-in ther-ight' side frame piate 1i).- Asl shown-iniFig.v 7, the aperture is formedof intersecting arcuately shapedslots which cuable'thepinlto rise with the shaft 33 for-a slight distance; after which it engages the upper'wall ofthe slot. The further-rotation of the shaft'i (clockwise in Figs. 5, 6 and 7 cams the pin `iti-rearwardly'(counterclockwise as seen in Fig.7),-thereby-irocking the-'shaft 33 and the bail 3d counter-clockwise as previouslyvdescribed. .i z

it would be readily apparent to those skilled in the art that the bail 8i:- could'lbe mounted on-a pair of arms pivoted in the frame of the machine, which-arms 'could be driven by a camA mounted on 'the drive shaft to secure arocking of ther-bail similar-to that above-described. Thus, the form of the` bail, and the particular method of operating it, is not ,particularly important.-y What yis-important is that the bail be so 'located that it vwill. lie oppositethe space between the points 81A and StB when the sleeves areblocked or permitted to rock by the disk 25, after which it is given counter-.clockwise,rotation to cam the sieeves du into theirextreme adjustedfpositions shown in Fig. 6. v 1 1 Lhave found that a counter actuator constructed in accordance with my invention herein described willopcrate with extreme accuracy even though made from parts manufactured by conventional shop rpractices 'and allowing for conventional tolerances..` Further, the counter actuator does not require the accurate assembly, or the accurate staggering of the counter tingerszdvpreviously required. Thus, my invention provides agcounting mechanism which is more efciently and economically manufactured and assembled, and whichv gives vaccuracy equal to, if not exceeding that. of, heretofore. known counting mechanisms of this kind.

I-ciaim:

l. A counter mechanism for a counter register cornprising a plurality of ordinaily arrangedcounting members, resiliently urged transfer means for :operating said counting members, means connected to said counting members for determining a tens-transfer. or non-transfer condition of the adjacent lower order, means controlled by said determining means for moving said transfer means toward either an operating or a non-operating position, means inciuding a cam on each of said transfer means and an operating member cooperating therewith for positiveiy positioning said transfer means `in either extreme position, and means for operating said operating member.

2. in a, counter et the class described having a piurality 'of ordinally arranged counter dials, a plurality of ordinally arranged dial operatingmembers, means for resiliently operating said operating members, means for blocking operation of such members, means for determininga tens-transfer 'from the adjacent lower order, and means controiled by said determining means for lcontroiling operation of said blocking means, Ythe improvement which comprisescam projections on such members, a bail vmovable in a path to move said caurprojectionsin one direction it operation of the counting members is blocked and in the other direction if .rotation ,is permitted, and means for moving .said bail in said path.

3. In a counter of the class .described having a plurality of ordinally arranged counter dials, a gear operatively connected to each dial,y a plurality of ordinally arranged gear operating members, means for resiliently rotating said operating members into engagement with their respective gears and then axially translating the members, means for sensing a tens-transfer condition in the adjacent iower order, and means operated by said sensing means when sensing a non-transfer condition for biocking rotation of such members, the combination which comprises cam projections on suchV members, a' bail rn'ovabic in a path to passen one sidefof vsaid camA projections if rotation .of the counting members 'is blocked and on the other side thereof if rotation is permitted, and means for moving saidfbail in said path. l. 1- fnln a countingmechanism comprising ordinally arranged register diais,.a gear and a notched disk aixed to said dials, a counter actuator comprising a rotatable andlongitudinally movable shaft, means for rocking and longitudinally moving said shaft, dial operatingmembers rotatably mounted'on said shaft, said-'dial operating members having one portion engageable with the ordinally related gear and another Aportion engageable withA the disk of the next lower order, means .for resiliently rocking said dial operating members from the rocking of said shaft', cam projections on said counting members, a `bail mounted for movement in a path to pass on one sidewof said cam projections when rocking of the dial operating member is biocked by engagement of the second portion thereof with-the disk of the next lower order and passing on the other yside of said cam projections when said secL ond portion of said. dial operating member penetrates the notch in said disk, and means for. rocking said bailin said path. i i 5. In a counting mechanism comprising ordinally arranged register dials, a gear and a notched disk operatively connected to said dials, a counter actuator comprising a rotatable and longitudinally movable shaft, means for rocking and longitudinally moving said shaft, ordinally arranged dial operating members rotatably mounted on said shaft, said dial operating members having one portion engageable with the gear of the ordinally related register dial and another portion engageable with the disk of the next lower order register dial, meansffo'r resiliently connecting said dial operating members ftosaid shaft, opposed camv faces on said dial operating 'meinbers', a bail mounted for movement in apath to engage one face of said cam when the second portion of the dial operating member engages the face of the disk of the next lower order and the opposing face of said-cam when said second portion engages the notch in said disk, thereby camming said dial operating members out of or into engagement with said disk and gear, and means for rocking said bail in said path. Y 6.' in a counting mechanism comprising ordinally arranged register dials, a gear and a notcheddisk attached to Said dial, a counter actuatorcomprising a'rotatable and longitudinally movable shaft, means for cyclically rocking and longitudinally moving said shaft, ordinally arranged dial Yoperating members rotatably mounted on said shaft, saidl dial operating members having one portion engageable with the ordinally related gear and another portion engageable with the disk of the next lower order dial, means for resiliently rocking said dial operating members by the rocking' of said shaft, a` cam nose on said counting members, a' cyclically operated bail cooperating with said cam noses, said bail in its movement engaging one edge of a cam nose when rocking of the dial operating memberY causes the second portion thereof to engage' the face of disks 'of the next lower orderl and thereupon'cam `the counting member lin the opposite direction to disengage the disk, and vengaging the other edge of a cam nose when rocking of the dial operating member causes the second portion thereof to engage the notch in said disk and thereupon cam the counting member the direction to cause it to engage its gear, and means for rocking said bail.

7. In a calculating machine, a krevolutions counter comprising a plurality of ordinally arranged dials, a gear and a notched disk operatively connected to each dial, the axis of rotation of said gears being disposed parallel in the same piane, a cyclically operable actuator Vfor said counter mounted for axial reciprocation and for oscillation about its axis, the axis of said actuator being disposed transversely with respect 'to-the'axis of rotation of said counter gears, said act't1ators'1having oneportion engageable4 with the ordinally' related gear and y 2,779,542 9 10 another portion engageable with the disk of the next lower tion or an extreme operative position, respectively, and order, a cam nose on said actuators, a cyciicaily operated means for moving said bail in said path. bail movable in a path to pass on one side of said cam projections ii rotation of the actuator is blocked and on References Cited 1n the fue 0f 'fhls Patent the other side thereof if rotation is permitted, thereby 5 UNITED STATES PATENTS cammlng said actuator to an extreme inoperative posi- 2,388,209 Friden Oct 30 1945 

